''' Purpose: introductory take on examining a table of values
'''

# define table
table = [ ["A", "B", "C" ], [ "D", "E", "F" ], [ "G", "H", "I" ], [ "J", "K", "L", "M" ] ]

print( "table:", table )

print()

# determine number of rows in table
nrows = len( table )

print( "the table has", nrows, "rows" )

print()

# print each row of the table along withs number of columns
for row in table :
    ncols = len( row )
    print( "row", row, "has", ncols, "columns" )

print()

# print each row of the table using row indices
for r in range( 0, nrows ) :
    row = table[ r ]
    print( "row", r, ":",  row )

print()

# individually print each row and column of the table
for r in range( 0, nrows ) :
    row = table[ r ]
    ncols  = len( row )
    print( "row", r, ":",  row )
    for c in range( 0, ncols ) :
        cell = table[ r ][ c ]
        print( "    column", c, "of row", r, ":", cell )
    print()

# print the table in people form 
for r in range( 0, nrows ) :
    ncols  = len( table[ r ] )
    for c in range( 0, ncols ) :
        cell = table[ r ][ c ]
        print( cell, end=" " )
    print()